public class IntegerDemo {
  public static void main(String[] args) {
    int data1 = 10;
    int data2 = 20;
    Integer wrapper1 = new Integer(data1);
    Integer wrapper2 = new Integer(data2);
    System.out.println(data1 / 3);  
    System.out.println(wrapper1.doubleValue() / 3);  
    System.out.println(wrapper1.compareTo(wrapper2));
  }
}  
